Typically, a WMTS service acts as a directory of WMTS layers, you can set a specific layer using the activeLayer property, (or else it will default to the first sublayer).

Data note:We acknowledge the use of imagery provided by services from the Global Imagery Browse Services (GIBS), operated by the NASA/GSFC/Earth Science Data and Information System (ESDIS, https://earthdata.nasa.gov) with funding provided by NASA/HQ.

Go to GIBS for information about this and other WMTS services from NASA Earthdata.